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Finding the Fourth Proportional to 4,878.42, 6,727.02 and 3,933.21

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Solution

The fourth proportional to 4,878.42, 6,727.02 and 3,933.21 is: 5,423.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,878.42 : 6,727.02 = 3,933.21 : x
  2. Step 2: Convert to fraction form
    4,878.42/6,727.02 = 3,933.21/x
  3. Step 3: Cross multiply
    4,878.42x = 6,727.02 × 3,933.21
  4. Step 4: Simplify right side
    4,878.42x = 26,458,782.33
  5. Step 5: Solve for x
    x = 26,458,782.33/4,878.42
  6. Step 6: Final answer
    x = 5,423.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.